Konica Minolta AF-2840 Short guide to tone curve corrections, Bringing out detail in the shadows

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DIMAGE SCAN DUAL III UTILITY – IMAGE PROCESSING

A short guide to tone curve corrections

Image processing is a highly specialized and difficult field that takes years of practice to master. This basic guide to using tone curves covers a few simple procedures to improve your pictures. For more about digital-image processing, consult your local book dealer about self-help guides on this subject.

Bringing out detail in the shadows

This is a simple technique to make a subject hidden in the shadows brighter. Unlike the brightness level control (p. 70), this method of correction will not loose details in the highlight areas of the image.

With the RGB channel selected, place the smooth-curve cursor on the center of the curve. Click and drag the curve up. Look at the displayed image to judge the result. The adjustment can be very small and still have a significant impact on the image. Moving the tone curve down will make the image darker.

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Contents AV-A209 Color Examples Tone-curve correctionsSelective-color palette Before YOU Begin Table of Contents Page Table of Contents Page For Proper and Safe USE Page Package contents System RequirementsIBM PC/AT compatible computers PolishInstalling the utility software Windows InstallationBefore installing the utility software Page Installing the utility software Macintosh Page Windows Installing Adobe Photoshop ElementsLaunching the scanner utility from Photoshop Elements MacintoshNames of parts Before scanner setup Connecting the USB cableTurning on the scanner Connecting the AC adapterDisconnecting the scanner Turning off the scannerLoading the film Where is the emulsion?Film formats Handling filmLoading mounted slides Loading a film holder into the scanner Using the FH-U1 and SH-U1 film holdersUsing the APS Adapter AD-10 sold separately Ejecting a film holder Launching the Easy Scan Utility Easy Scan UtilityUsing the Easy Scan Utility Canceling an index scan, prescan, or final scan Macintosh Page Pixel Polish button Auto Dust Brush button File types BMPAdvanced scanning p Dimage Scan Dual III UtilityBasic scanning p Image processing pSelecting the film format and type Launching the DiMAGE Scan Dual III UtilityLaunching the utility from an image-processing application Dimage Scan Dual III Utility Basic ScanningIndex scan Main window and index scan tabSelecting index thumbnails Canceling the index scanMaking an index scan Flip and rotate images Fit-to-window button Prescan Main window and prescan tabMagnifying tool Making a prescanGrab tool Auto croppingPrescanning the cropped area CHP button APS filmManual cropping Auto Dust Brush Removing the effect of dust Pixel Polish Correcting images automatically Main window and Pixel Polish tabPage Making the final scan using Jobs Quitting the DiMAGE Scan Dual III Utility Setting scanner preferences Dimage Scan Dual III Utility Advanced ScanningPage Exposure-control tab Saving exposure settings Loading exposure settingsMore index scan functions Reverse frame orderLoading an index file Saving the index imagesSaving an index file Autoexposure control More prescan functions AE area selection AE lockFocusing the scanner More prescan functions Point AF AutofocusManual focus Inputting scan settings manually Scan setting windowAbout resolution and output size Scan setting examples Saving scan settings as a Job Deleting a JobCustom Wizard Page Setting the output color space Color matchingPage Setting the monitor ICC profile Scanner color profilesColor matching recommendations Output Color Space Monitor RGBDimage Scan Dual III Utility Image Processing Image processing toolsMain window and image-correction tab Image processing glossary Guide to image processing toolTools and functions Effects Undoing and redoing image corrections Tracking image corrections Snapshot buttonComparing pre and post correction images Saving image correctionsLoading image-correction Jobs Complementary colorsVariation palette Brightness, contrast, and color balance palette Tone curve and histogram corrections Using tone curves Tone curve and histogram paletteDrawing tone curves by freehand Short guide to tone curve corrections Bringing out detail in the shadowsIncreasing image contrast Correcting colorHistogram corrections Tone curve / histogram auto setting White, gray, and black point corrections Setting the white and black-point values Selective-color paletteUnsharp mask Hue, saturation, and lightness palette 35mm film JOB File ListsAPS film Installed Files and Folders Mac OS 8.6 Mac OSTroubleshooting and Technical Support SolutionChecking Scanner Installation Windows Pixel Polish and Mac OSWarranty and product registration Technical supportTechnical Specifications RAMAN Introduction to Color Primary RGB and secondary CMY colorsComplementary colors Hue corrections Complementary colors pHSB color model p Universal Copyright Convention AV-A209